puppeteer 加载网页失败

开始打开网页
2021-12-22T09:32:19.799Z  [verbose] 访问 url 次数 1 
2021-12-22T09:32:32.340Z  [verbose] 标签页 3
2021-12-22T09:33:09.763Z  [verbose] 浏览器错误 { Error: Protocol error (Runtime.callFunctionOn): Target closed.
    at Promise (/code/node_modules/puppeteer/lib/Connection.js:183:56)
    at Promise (null:null:null)
    at send (/code/node_modules/puppeteer/lib/Connection.js:182:12)
    at _evaluateInternal (/code/node_modules/puppeteer/lib/ExecutionContext.js:107:44)
    at evaluateHandle (/code/node_modules/puppeteer/lib/ExecutionContext.js:57:17)
    at (/code/node_modules/puppeteer/lib/helper.js:112:23)
    at rerun (/code/node_modules/puppeteer/lib/DOMWorld.js:570:65)
    at _tickCallback (internal/process/next_tick.js:68:7)
  message: 'Protocol error (Runtime.callFunctionOn): Target closed.' }
2021-12-22T09:33:09.764Z  [error] (node:23) UnhandledPromiseRejectionWarning: Error: Protocol error (Network.getCookies): Session closed. Most likely the page has been closed.
    at send (/code/node_modules/puppeteer/lib/Connection.js:180:29)
    at cookies (/code/node_modules/puppeteer/lib/Page.js:382:32)
    at (/code/node_modules/puppeteer/lib/helper.js:112:23)
    at Promise (/code/aicard-event.js:367:28)
2021-12-22T09:33:09.764Z  [error] (node:23) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 2)
2021-12-22T09:33:09.764Z  [error] (node:23) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
FC Invoke End RequestId: , Error: Function timed out after 120 seconds (maxMemoryUsage: 0MB)

我这块在第一次打开页面的时候waitForFunction报错提示超时，于是我会再重试一次，这个时候waitForFunction就会报Protocol error (Runtime.callFunctionOn): Target closed.,这个问题我十次里面会遇到一两次，想问问这个是为啥啊，我中间 url 啥的都没改，就只是重新再 page.goto 一次，为什么会提示这个错误呢。

还有一个问题，这个是我这个方法的结构，我上面waitForFunction报错之后进入 catch ，在这里面获取 cookie ，但是目标关闭导致失败，这个时候什么会提示后面的错误，我想问问我这个不是写了 reject 吗，完了在调用toPDF时也写了.then().catch()，请问这个正确的写法该是怎样的呢

function toPDF() {
    return new Promise((resolve, reject) => {
        for (let i = 0; i < 2; i++) {
            try {
                //打开页面生成 pdf
                resolve()
            } catch (e) {
                // 获取 cookie
            }

        }
        reject(error)
    })
}